Stippler



a. CHARLTON.

Patented Feb. 22,1921.

INVENTOR Qhavlfim 5 ATIORNEYS UNITED STATES PATENT OFFICE.

GEORGE CHARLTON, cinnamon, moment; ASSIGNOR OF ONE-THIRD T" ERNEST CARTER AND oms-rmn m m IBBOTSDN, BOTH OF DETROIT, MICHIGAN.

S'PIPPLEB.

Specification of Letters Patent.

Patented Feb. 22, 1921.

Application-filed Kay 17, 1920. Serial No. 381,820.

T 0 all whom it may concern! Be it known that I, Gnonor. CHARLTON, a

. citizen of the United States of America, re-

g to, so that lines ma of circlesv inscribedb sidin at Detroit, in the county of Wayne and gtate of Michigan, have invented certain new and useful Improvements in Stipplers, of which the followingis a specification, reference being had therein to the accompanying drawings. 2 i

The primary object of my invention isto provide a stippling instrument or tool that may be advantageously used by photographers and artistsfor retouching photographic negatives, prints and pictures, the instrument including a pencil or stylus and novel means for imparting movement therebe softened, shadows raised,'and the densit of negative portions increased or decrease by inscribed or overlapping circles in contradistinctionto dots, lines, and the hooks generally used.

Another objectof my invention is to provide an instrument of the above typeincluding a tiltable member that may be adjusted to increaseor decrease the size or diameters the instrument, the tiltable member forming part of the power transmission. mechanism within the. instrument and even though the instrument is in operation, the tiltable member may be easily and quickly adjusted.

A further object of my invention is to provide a stippler whereinthe parts are constructed with a view of reducingthe cost of manufacture and'at the some time retaining those features by which durability and ease of assembling are secured. With such ends in view my invention resides. in the novel construction to be hereinafter considered and then claimed.

Reference will now be had to the drawing, wherein Figure 1 is a side elevation of the instrument, partly broken away;

Fig. 2 is a longitudinal sectional viewof the same;

Fig. 3 is an enlarged cross sectional view taken on the line 3-3 of Fig. 2;

Fig. 4 is a similar view taken on the line 4--4 of Fig. 2 and Fig. 5 is a similar view taken on the line 5-5 of Fig. 2.

To put my invention into practice, I provide a tubular handleor-barrel 1, and in the inner end thereof is mounted a bearing 2 for a drive shaft 3 which has its outer end provided with a sto flange 4 abutting the bearing 2, and to t e outer end of said drive shaft may be coupled a driven shaft (not shown).

Mounted in the outer end of the handle or barrel 1 is the inner tubular end 5 of a socket member 6 containing a ball member 7 which has a universal movementlin the socket member. Mounted in the ball member 7 is a wabbler sleeve 8 provided with a convex head or stop 9 abutting the ball and'socket members. The outer end of the wabbler sleeve is split or slitted, as at 10, and exteriorly screwthreaded, as at 11. Adjustable on the threaded portion of the wabbler sleeve is a cap 12 that may be held in adjusted position b a jam nut 13 on said wabbler sleeve. he cap 12 is adapted to contract the split or slitted end of the wabbler sleeve about a stylus 14 or other member placed in said wabbler sleeve, so thatthe stylus will be. firmly held during a wabbl ing movement of the sleeve.

In the inner end of the wabbler sleeve 8 is fitted a pin 15 which extends into an eye 16 at the outer end of a tiltable fulcrum member 17 fulcrumed on a transverse pin 18 mounted in the bifurcated inner end 19 of the drive shaft 3. This bifurcated inner end of the drive shaft. also accommodates a flat spring 20 held in position by a transverse pin 21 carried by said drive shaft. One end of the flat spring 20 engages the innerend of the tiltable fulcrum member 17,

and tends to holdsaidmember so that no circles will be produced, but: said member may be shifted from this position, against the action of said spring, to cause the stylus 14 to produce circles of different diameter. The spring 20 is housed within a drive shaft sleeve 22 and one end of said spring protrudes from the sleeve'to engage the member 17.

Slidable on the bifurcated inner end of the drive shaft 3 is a slide ring 23 having its outer walls enga, ;in, 1; the inner walls of the tubular handle or barrel 1. Mounted in the slide ring 23 are'opposed screws or pins 24 extendin in the hand e or barrel 1, and said screws or pins are carried by a slide sleeve 26 shiftable longitudinally of the handle or barrel. The slide sleeve 26 may be knurled or otherwise roughened to facilitate movement of through longitudinal slots 1 

